Her parents apparently are the ones who are upset! The article has the mom complaining that the daughter was in trouble for open lesbo behavior when heteros weren't puninshed.

The person to decide when and how to talk with our family about this should have been my daughter, not her principal, her mother, Crystal Chhun, said in a statement.

District officials have declined to comment on the lawsuit.

The lawsuit also claims discrimination, contending Nguon was suspended several times for ignoring orders from the principal to stop hugging and kissing her girlfriend. Heterosexual couples engaging in similar behavior were not disciplined, the lawsuit contends."